On Integrating Fluid Models with Packet Simulation

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On Integrating Fluid Models with Packet Simulation (2004)

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by Yu Gu , Yong Liu , Don Towsley

Venue:	In Proceedings of IEEE INFOCOM
Citations:	27 - 1 self

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@INPROCEEDINGS{Gu04onintegrating,
    author = {Yu Gu and Yong Liu and Don Towsley},
    title = {On Integrating Fluid Models with Packet Simulation},
    booktitle = {In Proceedings of IEEE INFOCOM},
    year = {2004}
}

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Abstract

Fluid models have been shown to be efficient and accurate in modelling large IP networks. However, unlike packet models, it is difficult to extract packet-level information from them. In this paper, we present a hybrid simulation method that maintains the performance advantage of fluid models while providing detailed packet level information for selected packet traffic flows. We propose two models to account for the interaction between background TCP traffic in a fluid network and foreground packet traffic of interest. The first assumes that the packet traffic poses a negligible load on the fluid network whereas the second accounts for the added load by transforming the packet traffic into fluid flows and solving the resulting enhanced fluid model. The first of these yields an efficient one pass solution algorithm whereas the second requires an additional pass to account for the packet traffic load. We establish the correctness of both approaches and present their implementation within ns-2. Comparisons between the hybrid models and a classical packet simulation show the two pass approach to be quite accurate and computationally efficient.

Keyphrases

packet simulation packet traffic integrating fluid model fluid model fluid network packet traffic load classical packet simulation packet-level information fluid flow pas solution algorithm enhanced fluid model hybrid simulation method foreground packet traffic second account performance advantage negligible load detailed packet level information additional pas hybrid model large ip network added load background tcp traffic packet model pas approach

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